Tractor mounted plow



May 5, 1953 w. H. slLvER ETAT. 2,637,260

TRACTOR MOUNTED PLow Filed Jan- 18, 1946 2 SHEETS--SHEET l IN V EN TOR.

May 5, 1953 w. H. SILVER ETAL TRACTOR MOUNTED PLOW Filed Jan. 18, 1946 2 SHEETS-SHEET 2 INVENTOR. WALTER H. SILVER ROBERT COX Patented May 5, 1953 TRACTOR MOUNTED PLOW Walter H. Silver and Robert E. Cox, Moline, Ill., assignors to Deere & Company, Moline, Ill., a corporation of Illinois..

Application January 18, 1946, Serial No. 642,083

(Cl. ,S7-47.1)

8 Claims.

The present invention relates generally to g tractor mounted implements and is more particularly concerned with ground working tools such as plows and the like.

The object and general nature of the present invention is the provision of a tractor mounted .H

implement particularly arranged and constructed for quick and easy connection with and disconnection from the tractor."` More particularly, it is a feature of this invention to provide a disk plow adapted to be connected with and disconnected from its supporting tractor merely 'by manipu lating two or three parts, which may be done easily and conveniently in a very short period of time.

More specifically, it is 'an important feature of this invention to provide a quick detachable implement which is supported at its front end on the tractor and at its rear end on a ground wheel, and it is a further feature of this invention to provide a steering connection between the ground wheel and the tractor whereby the outfit may operate satisfactorily along curved terraces and under other' conditions where more or less turning is required. Still further, it is a feature of this invention to provide an implement, such as a plow, in which a support or beam structure is provided whereby raising or lowering the front end thereof serves to control the depth of operation and in which articulated parts are provided so that raising the intermediate portionl of the4 support or beam structure, as by the power lift bail or other member on the tractor, serves to raise the ground working tools into a transport position and generally about the rear wheel of the implement as a fulcrum.

It is also a feature of this invention to provide "an implement connected at one endwith the tractor for lateral swinging movement and raised and lowered by the power lift member on the tractor,

with connections especially constructed to accommodate any lateral swinging of the implement relative to the tractor without affecting the action and/or efficiency of the lifting arrangement.

These and other objects and advantages of the present invention will be apparent to those skilled j in the art after a consideration of the following detailed description, taken'in conjunction with the accompanying drawings, in which:

Figure 1 is a plan view of an agricultural implement in which the principles of the present invention have been incorporated;

Figure 2 is a side view of the implement shown in Figure l; and

Figure 3 is a fragmentary view showing the -mounting for the rear furrow wheel.v

shafts t that are carried in extensions 5 forming a part of the rear axle structure 6 of the tractor. The axle structure 5 is secured to or forms a part of the frame of the tractor, and each of the rear axle housing extensions is provided with sets 0f attaching studs or the like, indicated at l, that are adapted to receive various implement parts as will be referred to below.

The tractor i is provided with a power lift unit indicated in its entirety by the reference numeral Iii and which includes a transverse rockshaft Il and valve mechanism including a foot operated valve lever I2. The present invention is not particularly concerned with the details per se of the power lift unit, the same 'being substantially like that shown in the United States Patent 2,107,760, issued February 8, 1938, to E. McCormick et al. to which reference may be made if desired. A

power lift arm member I3 is secured to each end of the rockshaft II and receives a bail member I4, the side portions of which have outwardly eX- tending trunnion sections I5 received for rocking movement in the power lift arms i3. The bail member I4 is of particular construction, including a rear laterally ortransversely extended Iportion I'I, to .which-more detailed reference will be made below. Adjusting set screws I8 are carried in the rear ends of the power lift arms I3 and serve as adjustable abutments for receiving the bail member I4, as best shown in Figure 2.

The implement in which the principles of the present invention have been incorporated and shown in the accompanying drawings by way of illustration, is indicated in its entirety by the refrear or main beam section in the form of a generally diagonally arranged bar 23 and a front or auxiliary 'beam member 24, the rear end of which is xed, as by welding, to a short shaft 25 which vis mounted for hinging or rocking movement in a sleeve 2B iixed rigidly, as by welding, to the forward end portion of the rear bar 23. The forward end of the bar 23 is extended over the rear end of Ythe bar 24 and is tapped to receive an adjusting screw 2l which forms an abutment for limiting -the downward hinging action between the beam.

members 23 and 24. As illustrated in the drawings, the plow 20 includes three furrow opening disks 3|, each mounted on the lower end of a disk standard 32 as by suitable bearing means (not shown). The upper end of each of the two forward disk standards 32 are secured, as by welding, to a pair of upper and lower attachment plates or brackets: 35 and 36 which are generally 'triangular in shape and spaced apart so as to'lie on the upper and lower sides of the beam 23.

Bolts 3l serve to rigidly fasten the plates 35 andl 36 to the beam 23. Preferably, the rear. portion of each of the pairs of upper and lower plates 35 and 30 are provided with a pluralityof apertures 58 whereby the angular position of"the:1islis3|` may be varied to secure the desired width of cut.

The rearmost disk standard.visrsecurechas.`

by Welding, to a pair of upper and lower plates 4| and i2 which, like the plates 35 and'3s men-- tioned above, are spaced apart to receive the beam'bar 23 therebetween; The yplates-4| and-42 are apertured to receive bo1ts`43', and the rear portionsof the plates4| and 42 are provided .with a plurality of apertures dittol provideffor. adjustingthe angular position-ofthe` rearmost disk 3i The plates14| and 42 are extended rearwardly to'provideportions 45 which are apertured to receiveY bolts lt'that fasten a rear furrow wheel bracket 4-1 to the rearbracket v.plates 4|.and 42. The platescl and t2 are provided -wth aplurality of' apertures*y 48 'attherear corner anda .slot 49 in the'forwardportion to provide for adjusting the angular position of the'bracket'l relative to the'plates 4| and42, which isnecessary wheneverthe plates-4| and` 42.' are shifted-about the frontibolt '43 as a-'pivot on the beam 23, and in order to providafor swinging the bar di about the same pivot; thefbolts |61 are carried in upper andlower pivot straps- 50.y

Theb'aror-bracket41"is shaped; as best shown in FigureZ, to -provide a-downwardly extending portion 5l to which a yoke'52'v islsecured, as by welding, the yoke 52 being Ysecured as by welding, to aspindle-receivingsleeve 54. Thecrear, furrow-'wheel 2|r is journaled for rotation on'. the laterally outwardly and .downwardly turned.por tion55of a vertical furrowrwheel,spindleI 56. Thelupper end ofthe spindlet 56 is squared. or otherwise formed'v to non-rotatably receive; a

4steeringarm 51, preferablyv securediinzplaceby is threaded, as @ati 65, and extends: through .a .pair

ofapertured'lugs 6i between whichaznutzmemberGS is disposed. The .nut ,member 68 isxprovided with an i extension G9 1 which i contacts 4the sleeve 541to preventlthe nut fromtrotating .when the adjustingv crank screw 64- isA turned which may v easily be donel by manipulating j the'` upper handle section. 'i I thereof.

A steering 'link construction 'I Slis `connected between the outer end of the arm 'l'and a point on'the tractor at lone side of .the ,centralportion thereof. Thesteering linkage preferablyy comprises a bracket T6, whichmaytake the form yof an angle, secured tothe lefthand axleextension 5-`and1having an upper. apertured lugl'l whichreceives the forward downturned end of a-forward rod-member 'i5'. The rear end of the=latteris`s1idably received in areantubular vsection 8| which-at its -frear endiis secured'to a lrear threaded section =8*3'. The lattersection carriesl a -pair'V of adjustingnuts=r84 and i851between which compression springs 86 and 81 are disposed. The adjacent ends of the springs and 81 bear against a swivel 83 that is pvotally connected, as at 09 (Figure 2), to the outer end of the steering arm 57. The springs 86 and B? provide a cushioning action whereby irregularities in the ground do .not impart excessive vibration` and/ or loads' to thel tractor. Thelink construction 15 may be adjusted in effective length by sliding the member 8| along the member 19, which may be donebymeans of an adjusting lever 9| that is pivoted to a section 92 fixed to the rod 79. A linkes'l is pivotally connected, as at 94, to the lever Stand at itsrear end is pivotally connected, as at 05,' to a collar '9E that is fastened in any suitable way, ast byywelding, to the forward end of the tubular member 8|. The lever 9| is provided with suitable detent mechanism 91 so that when the lever 9| is locked to the sector 92, the effective lengt-hief the linkage'f 4is'heldin adjustment; the linkage 175; serving vtoizsteerthe. rearffurrow4 wheel 2| wheneverzthe implement-.20 swings; laterally!y about a vertical axis relative to the tractor.

The-hitch construction'providing for the .above mentioned 'quick detachability; and also the .above mentioned lateral swingingfwiil nowbe described. The-;hitch.mechan;ism connecting the plow beam 22,. andassociated .parts to. the tractor 5 y is indicated in itsl entiret-yffbyv the: referencenu.- merali 00'. and comprises sa rear :bracket member |0:|,' preferably inzthe: form of ax; U-shaped yoke secured, asbyxbolts onthe like-to the beam 23 and; havingf; forward:A apertured4 lug sections 03 and |04, each of which has a bushing or sleeve section-.l 05. and: |06-5secured thereto, vas by'weld ing, together-with.a-.rigid draft member 2 and means, referred;to.b.elow` in detail, for hingedly connecting they forward end ofthe rigid'mem.- bers||2 with the-tractor. The yforward portions |03,l and. |04aof, the brackety |0| I are `reenforced byyacross brace. |08. The bushings or sleeves |05 and |06, and.thecorrespondingopeningsin the :lugs |03 and I 04 .receive the.,y rear. laterally turned end |||l of the above-mentioned, rigid draft member'llZ, which preferably is of generally; Z-shaped configuration havingv an inter-,- mediate l section, |3v connecting the :rear section Awith aforward laterally directed section ||4. The forward lateral section Illof the -rigid draft member, ||2 isereceived in;a. pair of sleeve sectionsllt.v and ||1 that aresecured, as-:by welding, to amounting- ,plate ||8 (Figure 2), which plate. alsouhas rigidly, secured thereto. a. hitch barsection` ||$|2theA rearA end. of which isaper tured to receive a quick detachable. member |2 the sleeve.- sections` ||6 and the mounting plate.A I8; and. the. section` I9 constituting the above-mentioned. means for hingedly, connecting ,the forward Yendof the rigid. member |2 with the tractorthese.parts.-being connected, as at I2 |with' the laterallyyswingable tractor drawbar |24thus;also.formingmeans providing for lateral swingingjof the draftmember ||2 and theplowas.- a whole,I relative` to the tractor.

`The-tractor islprovided witha hitch-receiving structure. which comprisesv a drawbar sup'- port |22,an;upp er p late |23 thatiswspa-ced from the-drawbar support: |22, tov receive the hitcnplatefy ||8f therebetween, and a laterally 4swingable drawbar: member |24l which has its rear end apertured'toreceive. the hitch pin|2| andlwhichfjrrturn; is received. within a notch formed in the downturned portion |251 of the attachingor hitchplatef H8; AItwll be seen that by virtuef. thepone connecting,nin` 2 |v :the

implement hitch structurels connected with'the tractor to swing about a vertical axis, defined by a :pivot member |21 that connects the forward end of the tractor drawbar |24 with the tractor body. However, the implement may swing vertically relative to the tractor by virtue of the pivotal connection on the rear end of the rigid draft member ||2 with the plow beam bracket and also by virtue of the pivotal connection between the forward end of the rigid draft member I|2 and the attachment plate sleeve sections |I|i and II1.

The particular details of a hitch :construction of this kind is disclosed and claimed in our co-pending application, Serial No. 566,539, filed December 4, 1944, now Patent No. 2,604,834.

The front end of the forward beam member 24 is connected by a chain I3| to an arm |32 that is formed on or carried by a depth adjusting lever |33. The lever |33 is pivotally mounted, as at |34, on a sector bracket |35 which is secured, as by the above mentioned studs 1, to the forward side of the right hand axle housing extension 5. Swinging the lever |33 in one direction or the other acts through the chain |3| to raise or lower the front end of the beam structure 22. However, the chain |3|, being a flexible element, and further, being connected to the bar 24 fairly close to the pivot |21, lateral swinging of the implement toward one side or the other of the'tractor has little eect so far as the depth of operation is concerned.

The operation of the imp-lement described above is substantially as follows,

Figure 2 shows the implement arranged in operating position, and it will be noted that the main draft load is transmitted from the tractor to the implement through the rigid draft member I |2 that is hingedly connected to the tractor and the implement for movement relative thereto about transverse axes. Also, it will be noted that this member I|2 is arranged in a downwardly and forwardly extending position, whereby there is a downward component of the draft force which serves to hold the disks 3| to their work. This downwardly directed force component is also adapted to hold the beam members 23 and 24 in rigid relation, the abutment 21 serving to limit the downward displacement of the beam sections 23 and 24 under the effects of the downwardly directed force componentjust mentioned. The front end of the member 24 tends to move downwardly but is held in position by the chain |3| and the depth adjusting lever |33. The rear furrow wheel 2| is normally placed so that it is on the level with the rear disk 3|. Since the implement is capable of swinging laterally about the axis defined by the pivot bolt |21, when the implement does swing laterally it is desired to steer the rear furrow wheel 2|, and thatis accomplished by the steering linkage which, as mentioned above, 1s connected with the tractor generally at one side of -the vertical axis through the pivot bolt |21. 'The position of the rear furrow wheel 2| in avertical direction relative to the disks 3| may be adJusted by turning the crank 1|.

` is connected at its lower end by a shackle |42 with the forward portion of the beam 23. At

:its upper end the chain |`4| is connected by' a swivel |44 to a roller |45 which operates along Vtherear transverse section I1 of the power lift upwardly, the chain Illl, which normally is slack .in operation, tightens and raises the forward end of the bar 23, lifting the furrow openers 3| out of contact with the ground and swinging the rear beam section 23 upwardly, generally about the rear furrow wheel 2i as a fulcrum. It will be noted that in this action the front bar 24 merely swings down idly away from the front end of the bar 23, moving out of contact with the abutment 21.

Preferably, the disk furrow openers 3| are provided with scrapers, but since the scrapers are of conventional construction they have not been illustrated in the drawings. Preferably, each scraper is mounted on a scraper bracket |50 which may be secured, as by a bolt 552, to the upper end of each of the disk standards 32, the latter having apertures |5| for that purpose. For purposes of clarity, only one of the scraper brackets I5!) is shown in the drawings. The sleeve section 26 receiving the stub shaft 25 to which the rear end of the forward beam bar 24 is secured, is reenforced by a brace |54.

While we have shown and described above the preferred structure in which the principles of the present invention have been incorporated, it is to be understood that our invention is not to be limited to the particular details, shown and described above, but that, in fact, widely different means may be employed in the practice of the broader aspects of our invention.

What we claim, therefore, and desire to secure by Letters Patent is:

1. A plow adapted to be mounted at one end on a tractor having a laterally shiftable hitchreceiving means, said plow comprising a generally longitudinally extending beam, a rear furrow wheel connected with the rear end of said beam for movement relative thereto about a generally vertical axis, furrow opener means carried by the rear portion of said beam forwardly of said rear furrow wheel, hitch means extending between an 4intermediate portion of said beam and the laterally shiftable hitch-receiving means of the tractor and providing for lateral swinging of the implement relative to the tractor about a generally vertical axis, said hitch means including a rigid member and front and rear means for hingedly connecting the front and rear end portions of said rigid member with said beam and said hitchreceiving means of the tractor, respectively, for relative movement about transverse axes, means adapted to act between the front hinged connecting means and the tractor for preventing lateral tilting of the plow beam and associated parts relative to the tractor about a generally fore-and-aft y extending axis, lifting means connected with the front end of said beam for raising and lowering the latter to control the depth of plowing, said hitch member being movable about the axes of its hinged connection with the beam and the hitch-receiving means of the tractor, respectively, and a steering link connection between said rear furrow wheel and one side of the tractor.

2; A semi-integral disk plow adapted to be consacamos Z nectedwvitlraftractonhayngia laterally swingable draaibafr;` saidplow comprisingarplowgbeam struc'.- turefinoluding airear section :andra-front f section hingedlyfconnected for moyementrelativc there'- to aboutgay generally transverseaaxis, az'rear furrow wheel connected .with `the' rear end; of the. rearisec.- tion,-means acting between said sections-for limiting-fthe ldownward movement of fithefront .endof the.' rear section;- relative.: toa: the:- fronty section, means :adapted :tofbemounted. onthe. tractor at onefsidethereof andengageable with. thefffront end :'ofzthe: front ysection :for raising andv loweringv the frontend:ofthe'flatter-soas to' controlthe depth :of :operation of .fthezfurrowtopeners; aiidraft Atransm-ittingy connectionxhingedly.connected with 'the `interniecli'ate portion ofthel rear-:plowfbeam section .forr"movement*` relative g: theretof: about; a transverseqaxis, aupartylfiingedly connectedzwith said draftqtransxni-tting,connectiony for .movement relative thereto about a transversesaxisand adaptcda-.to :be iiiiedly connected'ltothe tractor draw- ;bar'rand-,thereby swingable laterally, relativet to bracketiiixedrto :the generally i:intermediateV portionpofisaid ,beam .rearwardly ofzcertain of; said l furrowf openers: and .extending forwardly f-rornthe forward side of the beam, anda. generally Zr- -shaped'rigid draft member'havingza 1ear1laterally;loutwardlyrextending` portion journalledzfor pivo tingmovement -inftheiorward portion of .said bracket andv havinga forward portion extending laterally; oppositely"relatiteztosaid:rear laterally extending; portioniandaadaptedto be'hingedlycon' nected for generally vertical fswingingmovement with the tractor.'` andtaforwardly extending 'part pivotallyjconnectedrat itsfrear .endl .tofthei-forward portion of said beam and V'adapted Itov be connected. at itsrfrontendwith the tractor forladdusting the :depthof operation. of saidfurrow openers, said f beam havingat tsforward 'end aipart engageable Withsaidorwardly extendingnpart for` limiting thecrelative` movementv in one' direction; between said, beami andsaidcforwardly extendingc part.:`

4e A -tractor mounted yplowy comprising frame,

means including ai generally; diagonally 'extending ,beaml having furrow opening means: thereon,

. a., draft bracket fixed. to. said :beamfY andwextending-,generally forward-lyy at-one iside ofsaid .diagonallyy extending; beam,saiiidraftLbranlcet coinprisinga generally Ushaped memberhavingzforwardly extending ,aperturedi ends. amisinterconnected side' sections-one of which is .shaped;to..lie

against t one sidel of saidn diagonally,` extending beam, means :for securing said;sidersection` to said 4 side?offthezdiagonalbeam; theforward :apertured portion of saidside section beingspaced from said l bearn,;.and'a:generally,Zeshapedfrigid draft memberhavingia-rear laterally extendingportionjournaledfforpivotingmovement in theforwardvaper- Y turedfends off said bracket," a central "forwardly extending sectionI having its "rear" portion' joined to the-inner endoi saidl rear l'aterallfyextending portion andlying in the 'spacebetween said vbeam andthe apertured portion of' said side section "of said U-shaped draft bracket; and aforward laterally extending; portion disposed," generally parallel to saidrear laterallyI extendingportion and adapted to. be hingedly .connectedfoi gener- 8 allyy vertical :swinging movement Lwith. theatres;- tor:

5;, A tractor mountedl plow/comprising fram means including a'generallydiagonally extending beam having furrow openingrmeans thereon,f,a steerablev rear furrow'wheel, a supporting section disposed'furrowwardly atthe. rear endvof said beamffor connecting said wheel therewith,.a'draft bracket fixed to the intermediate portion of said beam and extendinggenerally forwardly'at the landward side of saiddiagonally extendingbeama generally Z-shaped rigid draft member having a rear Ilandvslardly extending portion journaled for pivotingmovement in sadbracket andhavinga forward portion extending; furrowwardly and adapted to be hingedly connected for generally vertical swinging movementwiththe tractor, a furrowwardlyl extending` armv connected to .turn saidrearsteerable wheel, means adapted-to be carried at the furrowward side of the tractor and connected with .the forward end of said diagonal beam for raising and lowering the latter to adjust theworking' depth of said furrow opening means, and la'stcering link connected at its rear portionwith said. steering arm and extending diagonally forwardly across said. beam andcon- :oected with the landward side of the tractor, whereby turning ofl the tractorz relative :to said eam turnssaid rear steerable wheel.

o. A tractor mounted plow adapted to be connected with a tractor having alaterally swingable part, said plow comprising av main plow beam section and a forward auxiliarybeam section hingedly connected together-.for movement about a transverse axis,- adjusta'ole leveling means carried by said main beam sectionandV engageable'fwith the auxiliary beam section for limiting the upward` movement. thereof 'about said axis relative to said main plow beam section, thereby; leveling the plow in afore andaft direction, a rear furrow wheelconnected to the rear endof said main beam section,.a rigid draft member hingedlyconnected with the tractorandv with the main beam sectionand movable relative to both about transvversef'aXes, means for connecting said rigidy draft meinbervwith the. laterally swingable -part of the tractor so as to bepivotally connectedwith the latter for'lateral'movement about a generally vertical,axismeans.engageable with the front end portion' offsaid auxiliary. beam section for adjusting theidepthof operation of the plow, said last mentioned means includingja` generally verticallysuspendedpart accommodating the lateral movement' of the plowabout said vertical axis,

' and' meansadanted to becarried on the tractor andiengaeeable withnone-,ofl said beam sections adjacent tlieiloinged connectionV between said sections forrraising the -plowl about said rear furrow ywheel asa ful-Crum.

T. A .tractor mounted vplow comprising a generally; longitudinally extending beamsectionya draft connectionv between the generally intermediate' portion of said beamy section and the tractor, anyauxiliary beam member pivotallyconnected at its'rear end with the forward portion o'lsaidzbeain-y sectionA rearwardly of the front end thereof and extending at. its forwardend alongside aportion of the tractor, abutment means carried byg'thenfronttend of said beam section and V'overhanging the rear portion. of'said forwardly extending auXil-iarybcam member and serving as a stonfor limitingthe'downward movement of the forwardportionof saidbeain section relative to saidifforwardly. extendingV auxiliary beam. member, lifting, means connected. with said beam sectien rearwardly of the rear end oi said auxiliary beam member, and means adapted to be mounted. on the tractor and connected with the forward end of said forwardly extending auxiliary beam member for raising and lowering the latter so as to Control the depth of operation of the plow.

8. A plow adapted to be mounted at its front end on a tractor, comprising a generally longitudinally extending beam structure, a rear furrow wheel connected with the rear end of said beam structure for movement relative thereto about a generally vertical axis, furrow opener means carried by said beam structure forwardly of said rear furrow wheel, hitch means extending between said beam structure and the tractor for lateral swinging of the plow relative to the tractor about a generally vertical axis, means for hingedly connecting said hitch means with said beam structure and with said tractor, said hitch means being rigid, whereby the latter serves to prevent lateral tilting of the beam structure and associated parts relative to the tractor, lifting means connected to act against the front portion of said beam structure for raising and lowering the latter to control the depth of plowing, said hitch means moving about the axes of its hinged connections with said beam structure and the tractor, respectively, when said lifting means is actuated, and a steering link connection between said rear furrow wheel and one side of the tractor.

WALTER H. SILVER. ROBERT E. COX.

References Cited in the le of this patent UNITED STATES PATENTS Number Number Name Date Heylman Oct. 3, 1916 Lindley Feb. 10, 1920 Krotz Jan. 8, 1924 Ferguson July 4, 1933 Willson et al. July 18, 1933 Brown Oct. 3, 1933 Mahan July 10, 1934 Lindgren Apr. 20, 1937 Park Nov. 2, 1937 Strandlund Nov. 9, 1937 Hester Oct. 4, 1933 Morkoski Sept. 12, 1939 Fleck Dec. 5, 1939 Altgelt 1Eeb. 3, 1942 Avrei-,t Jan. 12, 19113 Kott May 25, 1943 Allen Aug. 7, 19416 Silver Oct. 15, 1946 Johnson et al. Nov. 12, 1946 Silver Deo. 10, 1946 FOREIGN PATENTS Country Date Great Britain Dec. 14, 1922 Italy Oct. 25, 1932 

